Here's my thoughts on everything.
1. Joachim Ronning
I don't really care for the guy. He believes in using way too much cgi, which is the #2 reason why DMTNT was so bad. In his defense though, DMTNT was a low-budget film. ($230-$320 million) That's why non of the ships (the Pearl, Revenge, Essex, etc.) actually set sailed on water and were shot in front of blue screens instead. Now the Dying Gull did, but that's a much smaller caliber ship and Disney didn't build it. (privately owned) Also, there weren't many scenes where the ships were sailing in the daytime, and those scenes weren't very long anyways, (4-5mins at the most) so no need to spend a lot of money to build ships to sail on water when they're only going to be in 1-2 scenes in daylight that are only a few minutes long. But even if Disney allowed a higher budget, I believe we would of gotten the same cgi overrun film from Ronning. That's just the kind of director he is.
I would much rather have the man who started it all, Gore Verbinski, direct, but unfortunately, Gore's Disney days are probably over (hope I'm wrong) do to what happened with "The Lone Ranger". I'd even be ok with Rob Marshall directing. He did a much better job with "On Stranger Tides" than people give him credit for. Both of them are great directors and only use cgi when they have to.
2. Jeff Nathanson
GET RID OF HIM!!! The man is the #1 reason why DMTNT flat-out sucked. He practically went against everything that has been established in the previous films, such as the origin of Jack's compass, and Will's situation with the Dutchman, along with other things. Part of the reason why Johnny's acting was off, is because Jeff doesn't know how to write for him.
He also wasn't clear about a bunch of stuff, like, What happened to the Revenge? How did Marty reunite with Jack? How did Murtogg and Mullroy reunite with Barbossa? Why did Scrum leave Barbossa for Jack? If all Jack had to do was give up his compass for Salazar and his crew to be freed from the Devil's Triangle, then how come nothing happened when Jack gave his compass to Elizabeth in "Dead Man's Chest", or when he gave it to Will in "At Worlds End"? How does Salazar know that the key to his escape lies with Jack's Compass? Did Will quit ferrying souls to the afterlife? What happened to Bootstrap? Are we suppose to ignore the fact that Calypso still exist? (she does, right?) Is the Trident of Poseidon more powerful than Calypso? How did Jack and Barbossa know Carina's mother? How did Barbossa get to Shansa? Was Shansa in the same prison on St. Maarten that Jack and Carina were in? Since the Trident is some famous treasure that everyone in the movie has known about for some time, how come it's not mentioned in any of the previous films?
There's about 10 more questions I could ask, but I'll stop here.
Also, Jeff wasn't real creative with the dialogue. It felt like every sentence consisted of the words, dead, ghosts, trident, treasure, and curse.
I would absolutely love it if Ted and Terry write the story and screenplay. When it comes to the writing, the franchise needs to be in their hands. They know it better than anyone, and they know how to write for Johnny.
3. Johnny Depp
If you like him or not, he's the face of the franchise. Idk how it could go on without him. Jerry Bruckheimer has voiced his opposition to Disney about moving on from Johnny. He's made it very clear that if they want to go in that direction, he has to step away from the franchise, and other future Disney films, as producer. That would be a major blow, not just to the franchise, but to the Studios as a whole if they lose Jerry. I could go into detail about why Johnny should continue as Jack, but I'm going to get to the main point. If Disney doesn't want to lose the support of the greatest movie producer of all time, and Pirates 6 to flop worse than DMTNT, Johnny will return. And he should, despite all the bad buzz about him.
If Disney really wants to make another Pirates film, I honestly think it would be better to do a backstory about Jack or Barbossa.